Theorem dmv 5933

Description: The domain of the universe is the universe. (Contributed by NM, 8-Aug-2003.)

Assertion

Ref	Expression
dmv	⊢ dom V = V

Proof of Theorem dmv

Step	Hyp	Ref	Expression
1		ssv 4008	. 2 ⊢ dom V ⊆ V
2		dmi 5932	. . 3 ⊢ dom I = V
3		ssv 4008	. . . 4 ⊢ I ⊆ V
4		dmss 5913	. . . 4 ⊢ ( I ⊆ V → dom I ⊆ dom V)
5	3, 4	ax-mp 5	. . 3 ⊢ dom I ⊆ dom V
6	2, 5	eqsstrri 4031	. 2 ⊢ V ⊆ dom V
7	1, 6	eqssi 4000	1 ⊢ dom V = V

Syntax hints:   = wceq 1540  Vcvv 3480   ⊆ wss 3951   I cid 5577  dom cdm 5685

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2065  df-clab 2715  df-cleq 2729  df-clel 2816  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-dif 3954  df-un 3956  df-ss 3968  df-nul 4334  df-if 4526  df-sn 4627  df-pr 4629  df-op 4633  df-br 5144  df-opab 5206  df-id 5578  df-xp 5691  df-rel 5692  df-dm 5695

This theorem is referenced by: (None)